Tweaks to printing

- increase page width
- print scopes more legibly under -verbose

Author: odersky

src/dotty/tools/dotc/config/ScalaSettings.scala

@@ -37,7 +37,7 @@ class ScalaSettings extends Settings.SettingGroup {
   val usejavacp = BooleanSetting("-usejavacp", "Utilize the java.class.path in classpath resolution.")
   val verbose = BooleanSetting("-verbose", "Output messages about what the compiler is doing.")
   val version = BooleanSetting("-version", "Print product version and exit.")
-  val pageWidth = IntSetting("-pagewidth", "Set page width", 80)
+  val pageWidth = IntSetting("-pagewidth", "Set page width", 120)
 
   val jvmargs = PrefixSetting("-J<flag>", "-J", "Pass <flag> directly to the runtime system.")
   val defines = PrefixSetting("-Dproperty=value", "-D", "Pass -Dproperty=value directly to the runtime system.")

src/dotty/tools/dotc/printing/RefinedPrinter.scala

@@ -403,7 +403,7 @@ class RefinedPrinter(_ctx: Context) extends PlainPrinter(_ctx) {
           case impl: Template =>
             modText(tree.mods, if ((tree).mods is Trait) "trait" else "class") ~~
             nameIdText(tree) ~ withEnclosingDef(tree) { toTextTemplate(impl) } ~
-            (if (tree.hasType && ctx.settings.verbose.value) s"[decls = ${tree.symbol.info.decls}]" else "")
+            (if (tree.hasType && ctx.settings.verbose.value) i"[decls = ${tree.symbol.info.decls}]" else "")
           case rhs: TypeBoundsTree =>
             typeDefText(toText(rhs))
           case _ =>